Last week the Facebook Data team released Cassandra as open source. Cassandra is an structured store with write ahead logging and indexing. Jeff Hammerbacher, who leads the Facebook Data team described Cassandra as a BigTable data model running on a Dynamo-like infrastructure. Google Code for Cassandra (Apache 2.0 License): http://code.google.com/p/the-cassandra-project/. Avinash Lakshman, Prashant Malik, and…

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